creating unique instances for the nested model via batch build

[sbilge]

I am using pydantic_factories to generate random data following a nested model and having some problems with generating unique instances with .batch() command. The model is quite nested but I will describe it using a simple example.

This is a simple nested model:

class File(BaseModel):
  file_name: str = Field(None, description="""The given filename.""")
class Dataset(BaseModel):
  alias: str = Field(None, description="""The alias for an entity.""")
  has_file: List[File] = Field(
        None,
        description="""One or more File entities that collectively are part of this Dataset.""",
    )

Dataset and File have 1-to-many relationship. One dataset can have multiple files. Hence I would like to create many file names for one dataset. I tried using this to manage cardinality:

  class DatasetFactory(BaseModelFactory):
    """dataset factory"""

    __model__ = model.Dataset
    has_file = Use(FileFactory.batch, size = 3)

print(DatasetFactory.build().json(indent=2))

However, it returns the same values for File. So, my question is, how can I create different File instances?

[sbilge]

Okay, my bad. There was a mistake in my custom factory field definitions. It is solved.